Immunohistochemical analyses of lymph nodes after IR injury.
A-D Immunohistochemical detection of HO-1+ cells (arrowheads) in control (A), IR-45 (B) and IR-120 (C) lymph nodes. D Quantitative analysis of HO-1+ cells (%). E-H Immunohistochemical detection of PCNA+ cells (arrowheads) in control (E), IR-45 (F) and IR-120 (G) lymph nodes. H Quantitative analysis of PCNA+ cells (%). I-L Immunohistochemical detection of Casp-3+ cells (arrowheads) in control (I), IR-45 (J) and IR-120 (K) lymph nodes. L Quantitative analysis of Casp-3+ cells (%). M-P Immunohistochemical detection of CD68+ macrophages (arrowheads) in control (M), IR-45 (N) and IR-120 (O) lymph nodes. P Quantitative analysis of CD68+ cells (mm-2). Q-T Immunohistochemical detection of MPO+ neutrophilic granulocytes (arrowheads) in control (Q), IR-45 (R) and IR-120 (S) lymph nodes. T Quantitative analysis of MPO+ cells (mm-2). Mean ± SEM, n = 6–8, *P < 0.05, **P < 0.001. Scale bars: A-C, E-G and I-K = 25 μm, M-O and Q-S = 50 μm. Casp-3 = cleaved caspase-3, HO = heme oxygenase, IR = ischemia/reperfusion, MPO = myeloperoxidase, PCNA = proliferating cell nuclear antigen, VLN = vascularized lymph node.